Drunken sot in passenger seat, traditional victim of a lightning strike? (10)
I believe the answer is:
postillion
'traditional victim of a lightning strike?' is the definition.
(ref to a historical comic phrase)
'drunken sot in passenger seat' is the wordplay.
'drunken' indicates anagramming the letters.
'in' indicates putting letters inside.
'passenger seat' becomes 'pillion' (I've seen this before).
'sot' is an anagram of 'ost'.
'ost' placed into 'pillion' is 'POSTILLION'.
(Other definitions for postillion that I've seen before include "Rider of leading horse drawing carriage" , "One riding coach horse" .)